/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.runtime.jobmaster;

import org.apache.flink.runtime.clusterframework.types.AllocationID;

import java.io.Serializable;

import static org.apache.flink.util.Preconditions.checkArgument;
import static org.apache.flink.util.Preconditions.checkNotNull;

/**
 * Information about an allocated slot which is owned by a JobMaster.
 */
public class AllocatedSlotInfo implements Serializable {

	private static final long serialVersionUID = 1L;

	private final int slotIndex;

	private final AllocationID allocationId;

	public AllocatedSlotInfo(int index, AllocationID allocationId) {
		checkArgument(index >= 0);
		this.slotIndex = index;
		this.allocationId = checkNotNull(allocationId);
	}

	public AllocationID getAllocationId() {
		return allocationId;
	}

	public int getSlotIndex() {
		return slotIndex;
	}

	@Override
	public String toString() {
		return "AllocatedSlotInfo{" +
			"slotIndex=" + slotIndex +
			", allocationId=" + allocationId +
			'}';
	}
}
